Hi, I'm using PJMEDIA from my own application, and I've noticed that it outputs a lot of debug statements related to the audio stream. I do not see these messages when I use the pjsua binary. I want to make sure I am handling streams correctly and do not have any jitter issues caused e.g. by threading. Could someone help me by explaining exactly what these messages mean and if they are harmful in any way? This is an excerpt from my log: 2008-09-08 14:00:38.617000 (4) Master/sound: Underflow, buf_cnt=0, will generate 1 frame 2008-09-08 14:00:38.618000 (5) strm0x95d9a8: Jitter buffer empty (prefetch=1) 2008-09-08 14:00:38.620000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:00:38.642000 (5) strm0x95d9a8: RTP status: badpt=0, badssrc=0, dup=0, outorder=0, probation=-1, restart=0 2008-09-08 14:00:38.675000 (5) strm0x95d9a8: jb updated(2), prefetch=2, size=2 2008-09-08 14:00:39.244000 (4) strm0x95d9a8: VAD re-enabled 2008-09-08 14:00:39.244000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:00:39.821000 (5) strm0x95d9a8: jb updated(2), prefetch=4, size=4 2008-09-08 14:00:41.522000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:00:41.538000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:00:41.853000 (5) strm0x95d9a8: jb updated(1), prefetch=3, size=2 2008-09-08 14:00:43.604000 (5) strm0x95d9a8: Internal RTCP NTP clock skew detected: lsr=0x9266d31b, now=0x926a9aca, dlsr=0x4c624 (4:773ms), diff=65141 2008-09-08 14:00:43.870000 (5) strm0x95d9a8: jb updated(1), prefetch=2, size=2 2008-09-08 14:00:46.051000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:00:46.936000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:00:47.052000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:00:47.310000 (5) strm0x95d9a8: Jitter buffer empty (prefetch=2) 2008-09-08 14:00:47.339000 (5) strm0x95d9a8: jb updated(2), prefetch=4, size=4 2008-09-08 14:00:48.039000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:00:48.562000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:00:48.606000 (5) strm0x95d9a8: Internal RTCP NTP clock skew detected: lsr=0x926bb2fd, now=0x926f9b31, dlsr=0x4e5e3 (4:897ms), diff=64943 2008-09-08 14:00:49.356000 (5) strm0x95d9a8: jb updated(1), prefetch=3, size=4 2008-09-08 14:00:50.724000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:00:51.145000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:00:51.373000 (5) strm0x95d9a8: jb updated(1), prefetch=2, size=4 2008-09-08 14:00:51.374000 (5) strm0x95d9a8: JB shrinking 1 frame(s), size=3 2008-09-08 14:00:51.943000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:00:51.958000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:00:53.602000 (5) strm0x95d9a8: Internal RTCP NTP clock skew detected: lsr=0x9270c79f, now=0x92749a20, dlsr=0x4d0e5 (4:815ms), diff=65124 2008-09-08 14:00:54.261000 (5) strm0x95d9a8: jb updated(2), prefetch=4, size=5 2008-09-08 14:00:57.033000 (5) strm0x95d9a8: jb updated(1), prefetch=3, size=3 2008-09-08 14:00:58.605000 (5) strm0x95d9a8: Internal RTCP NTP clock skew detected: lsr=0x9275dbed, now=0x92799b07, dlsr=0x4bd2f (4:738ms), diff=65045 2008-09-08 14:00:59.051000 (5) strm0x95d9a8: jb updated(1), prefetch=2, size=3 2008-09-08 14:01:03.603000 (5) strm0x95d9a8: Internal RTCP NTP clock skew detected: lsr=0x927af044, now=0x927e9a6b, dlsr=0x4a872 (4:657ms), diff=65099 2008-09-08 14:01:08.542000 (5) strm0x95d9a8: jb updated(2), prefetch=4, size=5 2008-09-08 14:01:12.318000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:01:12.373000 (5) strm0x95d9a8: jb updated(1), prefetch=3, size=3 2008-09-08 14:01:12.754000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:01:14.391000 (5) strm0x95d9a8: jb updated(1), prefetch=2, size=3 2008-09-08 14:01:14.713000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:01:14.800000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:01:23.882000 (5) strm0x95d9a8: jb updated(2), prefetch=4, size=5 2008-09-08 14:01:25.322000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:01:26.032000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:01:27.249000 (5) strm0x95d9a8: Jitter buffer empty (prefetch=4) 2008-09-08 14:01:29.295000 (5) strm0x95d9a8: jb updated(1), prefetch=3, size=4 2008-09-08 14:01:31.312000 (5) strm0x95d9a8: jb updated(1), prefetch=2, size=4 2008-09-08 14:01:31.312000 (5) strm0x95d9a8: JB shrinking 1 frame(s), size=3 2008-09-08 14:01:33.797000 (5) strm0x95d9a8: Starting silence 2008-09-08 14:01:33.971000 (5) strm0x95d9a8: Start talksprut.. 2008-09-08 14:01:38.162000 (5) strm0x95d9a8: jb updated(2), prefetch=4, size=5 2008-09-08 14:01:42.269000 (5) strm0x95d9a8: Jitter buffer empty (prefetch=4) 2008-09-08 14:01:44.316000 (5) strm0x95d9a8: jb updated(1), prefetch=3, size=4 2008-09-08 14:01:46.333000 (5) strm0x95d9a8: jb updated(1), prefetch=2, size=4 2008-09-08 14:01:46.333000 (5) strm0x95d9a8: JB shrinking 1 frame(s), size=3 2008-09-08 14:01:48.603000 (5) strm0x95d9a8: Internal RTCP NTP clock skew detected: lsr=0x92a8a74d, now=0x92ab9a86, dlsr=0x3f1a9 (3:943ms), diff=65136 2008-09-08 14:01:53.342000 (5) strm0x95d9a8: jb updated(2), prefetch=4, size=5 2008-09-08 14:01:53.602000 (5) strm0x95d9a8: Internal RTCP NTP clock skew detected: lsr=0x92adbb9d, now=0x92b09a33, dlsr=0x3dced (3:862ms), diff=65111 Thanks in advance. Ruud Klaver AG Projects
